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Salt Crystal Experiment Worksheet

Science experiments lesson 18: Growing salt crystals · Set 222 · 40 questions
TalentJR

What you do (Dry out, crystals in): 1. An adult pours warm water into a cup. 2. Stir in salt, a spoon at a time, until no more dissolves. 3. Pour the salty water into a shallow dish and lay a string in it. 4. Leave it on a sunny windowsill, out of reach of small children, and check each day.

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  1. 1.🧂 Does sawdust dissolve in water? (a) does not dissolve (b) dissolves in water
  2. 2.🧂 Which of these dissolves in water? (a) sand (b) small pebbles (c) sugar (d) sawdust
  3. 3.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is the one thing we change. (a) True (b) False
  4. 4.True or false: baking soda does not dissolve in water. (a) False (b) True
  5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) warm water (b) salt (c) a spoon (d) a mirror
  6. 6.🧈 Can this change be undone: milk turning to curd? (a) can be undone (b) cannot be undone
  7. 7.True or false: table salt dissolves in water. (a) False (b) True
  8. 8.🔍 Which is the odd one out? (a) baking soda (b) table salt (c) sand (d) glucose powder
  9. 9.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
  10. 10.True or false: warm water is not needed for growing salt crystals. (a) False (b) True
  11. 11.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) warm water (c) a spoon (d) a mirror
  12. 12.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we measure it (b) we keep it the same (c) we change it
  13. 13.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
  14. 14.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it fizzes (c) few or no crystals (d) it turns sweet
  15. 15.🧺 Do we need turmeric powder for growing salt crystals? (a) not needed (b) needed
  16. 16.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
  17. 17.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a balloon (c) a battery cell (d) a spoon
  18. 18.🧂 Which of these does not dissolve in water? (a) table salt (b) glucose powder (c) chalk powder (d) sugar
  19. 19.True or false: cooking oil does not dissolve in water. (a) False (b) True
  20. 20.True or false: rusting iron is a change that can be undone. (a) True (b) False
  21. 21.True or false: chalk powder does not dissolve in water. (a) False (b) True
  22. 22.True or false: sand does not dissolve in water. (a) False (b) True
  23. 23.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the amount of salt (b) days to see crystals (c) sunny or shady place
  24. 24.🧺 Which of these is not needed for growing salt crystals? (a) a spoon (b) salt (c) a balloon (d) a piece of string
  25. 25.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a spoon (d) a balloon
  26. 26.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) smaller crystals (c) bigger crystals (d) no crystals
  27. 27.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) sunny or shady place (b) the same dish (c) the amount of salt (d) days to see crystals
  28. 28.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
  29. 29.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) salt (c) a magnet (d) warm water
  30. 30.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) salt eats water (c) water evaporates (d) the dish melts
  31. 31.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
  32. 32.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) a friend who is running (c) nobody needs to (d) the youngest child
  33. 33.🔍 Which is the odd one out? (a) glucose powder (b) chalk powder (c) sugar (d) food colour
  34. 34.🧺 Which of these is needed for growing salt crystals? (a) a battery cell (b) a shallow dish (c) a magnet (d) a balloon
  35. 35.True or false: yeast is not needed for growing salt crystals. (a) False (b) True
  36. 36.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
  37. 37.🧈 Which of these is a change that cannot be undone? (a) melting butter (b) dissolving salt (c) baking a cake (d) folding paper
  38. 38.True or false: yeast is needed for growing salt crystals. (a) True (b) False
  39. 39.🧂 Which of these dissolves in water? (a) cooking oil (b) table salt (c) sawdust (d) small pebbles
  40. 40.True or false: rusting iron is a change that cannot be undone. (a) False (b) True

Answer key

  1. does not dissolve
  2. sugar
  3. False
  4. False
  5. a mirror
  6. cannot be undone
  7. True
  8. sand
  9. cannot be undone
  10. False
  11. a mirror
  12. we keep it the same
  13. needed
  14. few or no crystals
  15. not needed
  16. dissolves in water
  17. a spoon
  18. chalk powder
  19. True
  20. False
  21. True
  22. True
  23. the amount of salt
  24. a balloon
  25. a balloon
  26. bigger crystals
  27. days to see crystals
  28. can be undone
  29. a magnet
  30. water evaporates
  31. can be undone
  32. a grown-up
  33. chalk powder
  34. a shallow dish
  35. True
  36. False
  37. baking a cake
  38. False
  39. table salt
  40. True

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